BALTIMORE (AP) — Baltimore reached a grim milestone on Friday, three months after riots erupted in response to the death of Freddie Gray in police custody: With 45 homicides in July, the city has seen more bloodshed in a single month than it has in 43 years.

Police reported three deaths — two men shot Thursday and one on Friday. The men died at local hospitals.

With their deaths, this year’s homicides reached 189, far outpacing the 119 killings by July’s end in 2014. Nonfatal...